Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 4 - Cumulative Review - Page 252: 15

Answer

$62cm, 62cm, 25cm $

Work Step by Step

Let the equal side of an isosceles triangle be $x$ and unequal side is $y$ Equal side is twice the length of the unequal side and increased by $12$ cm $x=2y+12$ Perimeter of an isosceles triangle is $149$ centimeters. $x+x+y=149$ $2y+12+2y+12+y=149$ $5y+24=149$ $5y=149-24$ $5y=125$ $y=25$ Equal side : $ x = 2y+12 = 2(25)+12 = 50+12 = 62 $ cm Unequal side :$y=25$ cm Three sides of pennant are $62cm, 62cm, 25cm $
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